Dental-drill attachment



(No Model.

J. H. MOYER & J. P. STANSELL.

DENTAL DRILL ATTACHMENT. No. 408,923. Patented Aug. 13, 1889.

ATTORNEY N. PETERS PnuwLilhogn hnr, Wmin ton, n. c

UNITED STATES PATENT OFFICE.

JESSE HECHLER MOYER AND JESSE PAINE STANSELL, OF TEMPLE, TEXAS.

DENTAL-DRILL ATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 408,923, dated August 13, 1889.

Application filed March 27, 1889. Serial No. 305,032. (No model.)

To all whom it may concern:

Be it known that we, J EssE HEOHLER MOYER and JESSE PAINE STANSELL, of Temple, in the county of Bell and State of Texas, have invented a new and useful Improvement in Dental-Drill Attachments, of which the following is a specification.

Our invention consists in a new and improved attachment for dental drills,which will be hereinafterfully described and claimed.

Referring to the accompanying drawings, Figure 1 is a perspective view of our invention. Fig. 2 is a detail View of the upper casting. Fig. 3 is a sectional detail view of the rod-joint. Fig. 4 shows the attachment constructed with two rods, and Fig. 5 is a sectional View of one of the rollers I.

The same letters of reference indicate corresponding parts in all the figures.

Referring to the several parts by letter, A indicates the double or endless propelling cord of a dental drill of ordinary construction.

B indicates the upper suspended pulley of the same, and 0 indicates the usual handpiece of the drill. The other parts of the drill are of ordinary construction, and form no part of this invention, and will therefore not be referred to by letter.

One frequent annoyance and cause of trouble heretofore experienced has been that on the dentist dropping or releasing the hand-piece for a moment it would make several turns, twisting and winding up the cords A between the suspended pulley B and the hand-piece,so that before the hand-piece could be used again it was necessary to stop and untangle and untwist the cords, so that the cords would run straight from the pulley B down to the handplece.

The object of our invention is to overcome this trouble and loss of time and render it impossible for the cords to twist or become entangled when the hand-piece is released; and this object we attain bythe attachment which will now be described;

D indicates the rod of the attachment, as shown in the accompanying drawings, this rod being preferably jointed, as at D, so that it may be made any required length by the addition of extra joints or pieces of rod. To the upper end of this rod is hinged, by a hinge E, a clip or small casting F, which is adapted pulley B, and which is secured thereto by a set-screw G, as shown.

At the lower end of the rod D is secured the casing H of a grooved pulley-wheel H, and small spools I are journaled in each end of the casing at the sides of the grooved pulley-wheel. The double propelling-cord A passes from the suspended pulley B down on each side of the grooved wheel H, between the said wheel and the small spools I. The axles or pins 1, on which the spools are mounted, screw at their inner ends into the ends of the spools, so that by removing them the spools can be removed to conveniently place the cords A between the spoolsand the grooved wheel 11. It will now be seen that by means of the rod D and the grooved wheel secured in the casing at its end the cords A will be spread and held apart, so that it will be impossible for them to twist or become e11- tangled, while the small spoolsI I prevent the cords from slipping off of the grooved pulleywheel. The rod is hinged to the clip F, so that it can be raised and lowered with the hand-piece O at different angles, and the casing H is rigidly attached to the lower end of the rod to prevent the wheel H from turning on the rod. The grooved wheel H and the spools I, revolving, prevent friction and wear on the cords A. The rod and pulley, holding the cords separate, will prevent the handpiece from turning, which is the source of all the trouble.

The attachment can be made with more than one rod D, using two rods, as shown in Fig. 4, or more.

Instead of the clip F, (here shown,) the upper end of the rod D may be fastened or connected to the upper pulley B in a number of different ways, either of which will answer the same purpose equally well, and in the same manner different forms of spreading devices can be employed at the lower end of the rod or rods to keep the dental hand-piece from turning and twisting the cords. It will therefore be seen that the rod is the principal feature of the invention in holding the cords and dental hand-piece in position and preventing them from twisting.

The rod can be made either of metal, leather, wood, paper, or any stiff or rigid material,

to fit or slide over the front casing B of the or it can be made flexible by jointing, linking, hinging, riveting, or otherwise connecting the parts together to form a flexible rod.

From the foregoing description, taken in connection with the accompanying drawings, the construction, operation, and advantages of our invention will be readily understood.

Itwill be seen that the invention is comparatively simple in construction and can be applied to a drill in a few moments. It saves time and labor, and obviates the annoyance of untwistin g the cords every time the dental hand-piece is to be used, and also has atendency to steady the same.

Having thus described our invention, what we claim, and desire to secure by Letters Patent, is-

1. In an attachment for dental drills, the combination, with the upper pulley I3 and the supporting pulley-frame B of a drill, of a rod having hinged to its upper end the clip F, having the set-screw G, and having at its lower end the frame II and the wheel '11, journaled in said frame, substantially as set forth.

2. In an attachmentfor dental drills, the combination, with the upper pulley B and the supporting pulley-frame B of a drill, of a rod having hinged to its upper end the clip F, having the set-screw G, and having at its lower end the frame II, having the wheel II and the side spools I, journaled within it, substantially as set forth.

JESSE IIEOHLER MOYER. JESSE PAINE STANSELL.

, \Vitnesses:

F. M. NICHOLS, W. II. WOLF. 

